16115033025 has 405 divisors, whose sum is σ = 38852794233. Its totient is φ = 6580828800.

The previous prime is 16115033003. The next prime is 16115033029. The reversal of 16115033025 is 52033051161.

The square root of 16115033025 is 126945.

It is a perfect power (a square), and thus also a powerful number.

16115033025 is a `hidden beast` number, since 161 + 150 + 330 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4153673601 + 11961359424 = 64449^2 + 109368^2 .

It is a tau number, because it is divible by the number of its divisors (405).

It is not a de Polignac number, because 16115033025 - 2¹³ = 16115024833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 16115033025.

It is not an unprimeable number, because it can be changed into a prime (16115033029) by changing a digit.

It is a polite number, since it can be written in 404 ways as a sum of consecutive naturals, for example, 519839760 + ... + 519839790.

Almost surely, 2^16115033025 is an apocalyptic number.

16115033025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16115033025 is the 126945-th square number.

16115033025 is the 63473-rd centered octagonal number.

It is an amenable number.

16115033025 is an abundant number, since it is smaller than the sum of its proper divisors (22737761208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16115033025 is a wasteful number, since it uses less digits than its factorization.

16115033025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 16115033025 its reverse (52033051161), we get a palindrome (68148084186).

The spelling of 16115033025 in words is "sixteen billion, one hundred fifteen million, thirty-three thousand, twenty-five".